{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "adverse event", "arguments": ["Subject", "Treatment.Route", "Treatment.Time_elapsed", "Combination.Drug", "Subject.Age", "Treatment.Duration", "Treatment", "Treatment.Freq", "Subject.Race", "Subject.Population", "Effect", "Treatment.Dosage", "Treatment.Disorder"]}], "input": "Although no coagulation study was done and the Meckel's diverticulum is normally associated with bleeding, the particular intensity of the following hemorrhage may have been favored by metformin."}
{"adverse event": [{"Subject": "NAN", "Treatment.Route": "NAN", "Treatment.Time_elapsed": "NAN", "Combination.Drug": "NAN", "Subject.Age": "NAN", "Treatment.Duration": "NAN", "Treatment": "metformin", "Treatment.Freq": "NAN", "Subject.Race": "NAN", "Subject.Population": "NAN", "Effect": "hemorrhage", "Treatment.Dosage": "NAN", "Treatment.Disorder": "NAN"}]}